Foreman's efforts have uncovered flaws in the investigation, he said. For one, Wright's body was found in an "unnatural" position," Foreman said.

Additionally, the personal trainer's family says he didn't do drugs. But authorities have argued that Wright had cocaine and crystal meth in his system when he died.

Foreman is also looking into the possibility that Wright might have known Cindy Maddox, the adult daughter of the sheriff who worked the case. The two reportedly knew each other from physical therapy work, allegations that Maddox reportedly denies.

A second autopsy commissioned by the family concluded that he sustained serious and gruesome injuries, suggesting foul play.

Authorities ruled out homicide in the initial autopsy.

"When a person is found at 28 years old unclothed and in the woods, how can you not treat it as a criminal investigation?" Foreman said.

ABC News chief legal affairs anchor Dan Abrams said the case should have been passed to state authorities.

"What's troubling is how quickly the authorities, the sheriff, dismissed the idea that this was not a potential homicide, before the body was even found," Abrams said.

"Just because someone runs off and acts like he may have been on drugs doesn't mean you give up searching and assume there was no foul play."